7.41 CHMOD — Change access permissions of files

Description:

CHMOD changes the permissions of a file. This function invokes /bin/chmod and might therefore not work on all platforms.

This intrinsic is provided in both subroutine and function forms; however, only one form can be used in any given program unit.

Standard:

GNU extension

Class:

Subroutine, function

Syntax:

CALL CHMOD(NAME, MODE[, STATUS])

STATUS = CHMOD(NAME, MODE)

Arguments:

NAME	Scalar CHARACTER of default kind with the file name. Trailing blanks are ignored unless the character achar(0) is present, then all characters up to and excluding achar(0) are used as the file name.
MODE	Scalar CHARACTER of default kind giving the file permission. MODE uses the same syntax as the MODE argument of /bin/chmod.
STATUS	(optional) scalar INTEGER, which is 0 on success and nonzero otherwise.

Return value:

In either syntax, STATUS is set to 0 on success and nonzero otherwise.

Example:

CHMOD as subroutine

          program chmod_test
            implicit none
            integer :: status
            call chmod('test.dat','u+x',status)
            print *, 'Status: ', status
          end program chmod_test
     

CHMOD as function:

          program chmod_test
            implicit none
            integer :: status
            status = chmod('test.dat','u+x')
            print *, 'Status: ', status
          end program chmod_test